Command Sgt. Maj. Jeffrey Collins of the Texas National Guard's 136th Expeditionary Signal Battalion conducts grenade familiarization training during the organization's Key Leader Pre-Mobilization Training March 25, 2015, at Camp Mabry in Bastrop, Texas. By conducting their training early, unit leaders will be able to help train and guide the battalion's main body personnel through the same lanes in June. (U.S. Army National Guard photo by Master Sgt. Daniel Griego/Released)